mkmf.rb: workaround for tmpdir

* lib/mkmf.rb (try_link0): workaround for miniruby as 'tmpdir.rb'
  always requires 'etc.so' now.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45717 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
node.c: indent

* node.c (dump_node): adjust indent to "ruby-style.el".

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45718 b2dd03c8-39d4-4d8f-98ff-823fe69b080e